How to rotate texture
I don't know how your object is rotated, but instead of setting Scale X to 200 in the Mapping Node, try Scale Z with 200 and X and Y at 1 (or maybe only 0.5) and change the Texture Coordinate from Generated to Object. If Z isn't correct axis, try setting Y to 200.
And if you're going to color your object, you don't need that Mix RGB node, because you're just flipping black to white and vice versa. But since the Noise Texture generates an even distribution of the 0 to 1 range, flipping the colors doesn't make much of a difference.
On the other hand, the Height input of the Bump node converts greyscale values to height information - so it's best to use the Fac output of the Noise Texture instead of Color.